Machine for engraving or sinking dies.



J, P. KELLER & W. A. WARMAN. MACHINE FOR ENGRAVING OR SINKING DIES.

$569769 APPLICATION FILED AUG. 7, 1909. Patented 3 3 SHEET8-SHEET 1.

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956,769 APPLICATION FILED AUG. 7, 1909. Patented May 3 3 SHEETS-SHEET 2.

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J. P. KELLER & W. A. WARMAN. MACHINE FOR ENGRAVING 0R SINKING, DIES.956979 AIPLIOATIONT FILED 'AUG. 7, 1909. Patented 3,

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JOSEPH/F. KELLER AND WILLIAM A. WARMAN, OF'NEW YORK, N. Y., ASSIGNORS'ro KELLER MECHANICAL ENGRAVING COMPANY, on NEW YORK, N. Y., A CORPORA-TION OF NEW YORK.

MACHINE FOR ENG-HAVING 0R SINKING DIES.

Specification of Letters Patent.

Patented May 3, 1910.

Application filed August 7, 1909. Serial No. 511,700.

To all whomit may concern: r

Be it known that we, JOSEPH F. KELLER and WILLIAM A. WARMAN, citizens ofthe United States, and residents of New York, borough of Manhattan,county of New York, and State of New York, have made and inventedcertain new and useful Improvements in Machines for Engraving or SinkingDies, of which the following is a specification.

Our invention relates to an improvement in machines for engraving orsinking dies, or re-producing in cameo or intaglio, and

more particularly to a device of this char-v acter to be especiallyemployed in re-producing a die from a templet, model or pattern, and ofthe same size, dimension or contour.

A further object of our invention is to provide a machine of thischaracter which shall be simple in construction, economical to build,and which will operate with pre- 1 cision to quickly and readilyre-produce the side of the machine, and Fig. 3, a similar die from thepattern, and with this and other ends in view, consists in certain novelfeatures of construction and combinations of parts, as will behereinafter fully described and specifically pointed out in the claims.

In the accompanying drawings, Figure 1 is a view in front elevation of amachine constructed in accordance with our invention. Fig. 2 is a viewin elevation looking at one view looking at the opposite side of themachine. Fig. 4 is a sectional view taken on the line 4-4 of Fi 1. Fig.5 is a sectional view taken on the line 55 of Fig. 1. Fig. 6

I is a detached view showing a part of the clutch mechanism. Fig. 7 is aview taken on the line 77 of Fig. 9. Fig. 8 is a view taken on the line88 of Fig. 9. Fig. 9 is a sectional view of the clutch mechanism. Fig.10 is a view taken on the line .10-10 of Fig. 9. Fig. 11 is a sectionalview taken on the line 1111-0f Fig. 6.

Referring to the drawings, 12 represents the base of the machine havingformed on or secured thereto the standard or post 13, the 'upper end ofwhich is provided with the frame 1 1, said frame, post and base beingpreferablymast in one piece. The frame 14,

shown in cross section in Fig. 5, has mounted thereon the plate 15, therear side of which is dove-tailed or undercut, in order to preventdisengagement from the frame 14. upon which it is mounted. This plate orslide 15 of the latter, this construction of parts permitting the plateor slide 15 to travel on the supporting frame 14. and carry with it theframe 18, the latter at the same time being permitted a swingingmovement by reason of its pivotal connection with the outer ends of thearms 16, 17. This swinging frame 18 has mounted thereon the motor 19,the same beingpreferably located in a line with the axis of thesupporting arms 16, 17, said motor being provided with a pulley 20around which passes a belt or rope 21 to a pulley 22 for-driving thecutting tool mounted on the forward end of said swinging frame, ashereinafter described.

0n the forward end of the swinging frame 18 are mounted the tracing tool23 and the cutting tool 22, located in a vertical line and equidistantfrom the axis of the supporting arms 16, 17, said cutter 22 and tracer23 being permitted of an oscillating or swinging movement in ahorizontal direction in accordance with the movement of the swingingframe upon which they are mounted, and in a direction toward and awayfrom the pattern and work.

In the frame 1% is mounted the screw 24, on which is threaded the nut 25secured to or formed on the rear side of the plate or slide 15, theresult being that when said screw 24 is turned or rotated, the plate 15and its supported frame 18 will be moved horizontally and in a directionin accordance with the direction in which said screw is rotated. By thusmoving the frame 18, the tracer and cutter carried on the forward endsthereof, will be moved in a horizontal dire'ctionand across the faces ofthe pattern and work.

The base 12 of the machine has formed thereon 01' secured thereto thebracket 25 upon which is mounted a motor 26, said motor being providedwith the gear 27 mesh ing with the gear 28 secured to the lower end ofthe shaft 29, to which is secured by means of the coupling 30, the screw31, said screw 31 being mounted in the frame 32formed on or secured toor cast integral with the standard 13..

@n the frame 32 slides the plate 33, which plate on its rear side, isprovided with the nut .34, threaded on the shaft 31, as clearlyillustrated in Fig. 4 of the drawings.

From the foregoing it will be understood that when the shaft 29 andscrew 31 are rotated in one direction by means of the motor 26, theplate 33 will be caused to travel in a vertical direction, eitherupwardly or downwardly in accordance with the direction of rotation ofthe motor.

On the plate 33 is clamped or otherwise secured, the model, templet orpattern 35, and in a vertical line therewith, the work 36, the model 35and work 36 being located opposite to the tracer and cutting tool,respectively. To the shaft 29 is geared one end of the shaft 37, mountedin the bracket 38 secured to the standard 13, the opposite end of saidshaft 37 being provided with the frictional disk drive 39, the detailsof which are clearly shown in Fig. 11. This drive preferably consists ofthe metal disk 40, provided with the arm or lug 41 to which is attachedthe connecting rod 42, hereinafter referred to. This metal disk isloosely mounted on the shaft 37 between the leather-lined disks 43, 44,said disks 43, 44, being tightly secured to the shaft 37 and binding orimpinging against the opposite two faces of said metal disk 40 withsulficient tension to cause the rotation of said disk 40 therewith, andwith the shaft 37, until the same is held stationary byithe deviceshereinafter referred to.

()n the shaft 24 is mounted a box or casing, in which is contained a cam46, keyed to said shaft 24, and on which shaft is also loosely mountedthe crank arm 47, the latter in turn being pinned or keyed to the casing45, and having its outer end attached to the connecting rod 42. ()n theshaft 24 is mounted the plate 48, provided with the lugs 49 extendinginto the box or casing 45, and between the cam face and the inner sideor surface of the circular box or casing. Between the lugs 49 iscontained a roller 51,

and resting on the periphery 50 of the cam 46 and adapted as hereinafterdescribed, to so bind said cam and box together as to cause the cam, boxand shaft to travel together at predetermined times.

To the plate 48 are secured the spring arms 52, the lower free ends ofwhich are adjustably secured to the box or casing 45 by means of the pin53 passing between said spring arms and bearing thereon and into theholes or openings 54, and 56, whereby to hold the plate 48 in itsseveral relative positions with relation to the box 45 and cam 46.

It will be understood that when the plate 48 is secured in position, asillustrated in Fig. 6, that is, in a vertical position and wherein thelugs 49 will retain the roller 51 at about the central portion of theperiphery of the cam 50, the box or casing 45 and cam 46 may be rotatedor partially rotated without any bindin action between the cam 46 andbox 45. f however, the plate 48 be shifted to one side or the other ofthe center, by inserting the pin 55 in the opening 54 or 56 of thecasing, the roller 51 will becarried over to near one end of theeccentric cam face 50; if now the disk 40 be rotated until the arm orlug 41 is carried to its uppermost position, and the connecting rod 42raised, the roller 51 will slightly travel on the cam face 50, until itbinds between the casing 45 and cam 46, thereby causing the casing 45,cam 46 and shaft 24 to be slightly rotated, this rotation or partialrotation of the shaft 24 causing the plate 15, swinging frame 18, andthe tracer and cutting tool to be fed or advanced in a horizontaldirection. The disk 40 rotates until the connecting rod 42 occupies theposition as illustrated say for instance as-shown by the dotted lines inFig. 6, to the right of the center of the disk 40. The parts remain inthis position until after the motor is reversed, whereupon the disk 40will rotate in the opposite direction, carrying the connecting rod intothe position as shown in full lines, Fig. 6, and in dotted lines to theleft of the center, in which position the parts will remain until themotor is again reversed. After each reversal of the motor, the shaft 24is partially rotated or turned, and the tracing and cutting tooladvanced or fed across the faces of the pattern and work. In order tolimit or regulate the extent to which said shaft 24 is rotated at eachstroke of the connecting rod 42, I secure to the slide 14 the link 57provided with.

the arc-shaped slot 58, the bolt 59 passing through said slot and intosaid frame or slide 14, holding said link in its different positions.This link is loosely mounted on the shaft 24, and is provided with thestop 59 in vertical line with the crank arm 47, whereby when theconnecting rod 42 is low ered, its downward movement will be limited bythe arm 47 striking the stop 59*, its upward movement, of course, beingregulated by the length of the arm 41 formed on the disk 40. Thisreversing mechanism may be of any approved type, that which I have.

used with good results comprising a bracket 60 formed on or secured tothe standard 13. 1

On this arm or bracket 60 is pivoted the switch lever 61, one endthereof having secured thereto the knife 62 adapted to alternatelycontactwith the terminals 63, 64 of the double-throw knife switch 65,the opposite end of the lever 61 contacting with the spring actuatedstop 66 mounted on the bracket 60, in order to limit the throw and holdin its different positions the said lever 61. To the lever 61 is securedthe lower end of the rod 67, the upper end of. which-is threaded andprovided with the adjustable stops or collars 68, 69, as clearly shownin Fig. 3 of the drawings. To the frame 33 is secured the arm 70,through an opening in which passes the rod 67, said arm when the frame33 is caused to travel upwardly, striking the stop 68, and when causedto travel downwardly, striking the stop 69, said stops being so adjustedas to limit the vertical travel of the frame and operate to reverse themotor, ashereinafter described. When the screw 31 is rotated in onedirection, whereby the plate 33 is caused to travel downwardly, the armon said frame 33 will strike the lower stop 69, the result being thatthe rod 67 will throw the lever 61 into the position as illustrated inFig. 1, that is, with the knife 62 contacting with the lower terminal 64of the switch 65.- Thereupon the direction of rotation is reversed, thescrew 31 being then turned or rotated in the opposite direction, causingthe plate 33 to travel upwardly until the arm 70 comes in .pontact withthe upper stop 68, the result being that the rod 67 is raised,it in turnrais ing one end of the lever 61 and the knife 62 into contact with theupper terminal 63. The direction of rotation of the motor 26 is againreversed, this vertical reciprocating movement of the plate 33 beingcontinued so long as the machine is in operation. The free end of thelever 61 is held in its raised and lowered adjustments by means of thespring-actuated stops 66, with which said lever contacts or engages, asillustrated in Fig. 1. i

As illustrated in the the drawings, the screws 24 and 31 may be providedwith handles 80, 81, whereby to turn the same when the pattern and workare being adjusted in their proper relative positions in the machine.

From the foregoing it will be understood that when the machine is inoperation, there is a continuous vertical reciprocating movement of theplate 33 carrying the model or pattern 35 and work 36, with whicheontact respectively, the tracer 23 and cutting tool 22 In order toretain said tracer and cutting tool in contact with the model and work,we employ a weight 90, attached to one several figures of end of a ropeor wire 91, passing over a pulley 92 mounted on a bracket 93 formed onor secured to the plate 15, the opposite end of said rope or wire beingsecured to the swinging frame 18. While the pattern '35 and work 36 arethus vertically reciprocating in front of the tracing and cutting tools,the latter are, as before described, given a horizontal movement acrossthe faces of said pattern and work, by reason of the travel of the plate15 on the screw 24, and which plate as before described, carries the.swinging frame 18; that is, at the time that the plate 33 arrives atits uppermost point, the feeding mechanism partially turns the -26 isthen reversed, and the plate screw 24, thereby causing the plate 15 andits attached frame 18. with the tracer and I cutting tools, to move in ahorizontal direction; the direction of rotation of the motor 33 carryingthe model and work is caused to travel downwardly. When the plate 33reaches its lowest point, the feeding mechanism again causes the screw24: to partially rotate, thereby causing the tracer and cutting tool tobe again moved in a horizontal direction across the face of the modeland work, respectively.

The plate 33 again travels upwardly .to its uppermost point, and thisoperation continues until the tracer and cutting tool have been fedentirely across the faces of the model and work and the die or workunder operation completed.

This machine we have found in practice to be very effective in itsoperations, re-pro ducing as it does, with great precision and nicety, adie or other work from a model, templet-or pattern. It is automatic inits operations and comparatively simple and cheap to construct.

Having fully described our invention, what we claim as new and desire tosecure by Letters Patent, is

1. In a machine of the character described, the combination with avertically reciprocating plate, of the model and work secured to saidplate, a horizontally-swinging frame, a tracer carried by said frame incontact with said model, a rotating cutting tool carried by said framein contact with said Work, and means for moving said frame horizontallywhereby to feed said tracer and cutting tool horizontally across thefaces of said pattern and work, substantially as described.

2. In a machine of the character described, the combination with avertically reciprocating plate, of the model and work secured to saidplate, a reversing motor indirectly connected with and operating saidplate, a hor1- zontally sliding plate, a horizontally swing= ing framepivoted to said sliding plate, a tracing tool carried by said swingingframe, a rotating cutting tool carried by said frame, means for holdingsaid tracing and cutting tools in contact with the model and work,respectively, and means for feeding said plate and frame in a horizontaldirection whereby to move said tracer and cutting tool across the facesof the model and work respectively, substantially as described. a

3. In a machine of the character described, the combination with avertically reciproeating plate, of areversing motor indirectly securedthereto for operating sald plate, the model and work secured to saidplate, a horizontally sliding plate, means for feeding said slidingplate in a horizontal'directlon, a horizontally swinging frame pivotedto said sliding'plate, a tracer carried by said frame and held incontact with said model,

a cutting tool carried by said frame in contact with said Work, andmeans moving with said frame and connected with said cutting tool forrotating the latter, substantially as described.

4. In a machine of the character described, the combination with avertically reciproeating plate, of a motor connected with and operatingsaid plate, an automatic switch connected with said motor and engagingwith said plate for reversing said motor and limiting the travel of saidplate, the model and work connected with said plate, a sliding platemounted on the frame of the machine, a horizontally swinging framepivoted to said sliding'plate, a tracer carried by said swinging frame,a cutting tool carried by said swinging frame, means for retainin'g saidtracer and cutting tool in contact with the model and work respectively,a motor mounted on said frame and connected with said cutting tool forrotating the latter, and feeding mechanism connected with said slidingplate, and with the firstmentionedmotor for automatically feeding saidsliding plate and parts connected therewith in a horizontal direction,whereby said tracer and cutting tool are fed across the faces of saidpattern and work respectively, substantially as described.

5. The combination with a screw, of a waves casing loosely mounted onsaid screw, a crank arm loosely mounted on said screw and secured tosaid casing, a cam fitting in said casing and tightly secured to saidscrew, an adjustable roller located between said cam and said casing, astop for limiting the.

movement of said crank arm, and a friction drive connected to said crankarm, substantially as described.

6. The combination with a screw, of a casing loosely mounted on saidscrew, a crank arm loosely mounted on said screw and pinned to saidcasing, an adjustable stop for limiting the movement of said crank arm,a cam tightly secured to said screw and fitting within said casing, aroller located between said cam and casing, means for adjusting theposition of said roller, a driving shaft, a friction drive mounted onsaid shaft, and a. connecting rod connecting said friction drive withsaid crank arm, substantially as described.

' Signed at New York, borough of Manhattan, county of New York and Stateof New York, this 31st day of July, 1909.

JOSEPH F. KELLER. WILLIAM A. WARMAN.

Witnesses:

M. VAN NoRTwIoK, WILLIAM R. Ensou.

